Large Big Green Egg, Weber Performer Deluxe, Weber Smokey Joe Silver, Fireboard Drive, 3 DigiQs, lots of Thermapens, and too much other stuff to mention.
It’s mildew. It looks like smoky grease, but it’s mildew.
I hit it with Dawn Power Wash, I hit it with bleach and a toothbrush twice, and I’ve run it through the dishwasher twice on the pots & pans cycle. It is MUCH better than it was, and probably repeated attacks with bleach is the answer, but man. PITA. The bleach attacks were diminishing returns; the first one worked really well, but the second one didn’t.
Zep is bleach based. I’m using Clorox bathroom cleaner right now. Bleach is the #1 anti-mold and mildew product; deck and house cleaner is exactly the same as laundry bleach, a 5% solution.
I love Clorox Spray, works great. Not sure how you’re cleaning it, but I usually just spray it and leave on for an hour or 2, repeat as needed. If that’s not working, it might be beyond help.
Silicone surfaces are porous. I would first just boil it. Once boiled then brush with a baking soda and vinegar solution, let sit for 5 or so minutes and then rinse. If any stain persists then it is time to use bleach to remove the color from the stain.
It is probably too late, but for future reference ammonia is good for dissolving grease. But, don’t mix bleach and ammonia since it will produce a deadly gas.
My experience with porous surfaces like that is that you can't get all of the mold out of it. You think it is gone, it looks clean, and then it grows back because the mold digs down deep and holds on for dear life. I'd call it a loss and get a new mat.
Kamado Joe Big Joe III
Pit Barrel Cooker
Camp Chef Flat Top 900
Weber Performer 22
PowerFlamer Propane 160
Meater +
Thermoworks Smoke
Thermoworks Thermapen
Temp Spike
Lang 48 inch Deluxe Patio Model (burns hickory splits)
PK 360 (burns premium lump charcoal with wood chunks)
28 inch Blackstone Griddle (propane)
Rubs I love:
Yardbird by Plow Boys
Killer Hogs by Malcom Reed
AP Rub by Malcom Reed
Meat Church (any)
Three Little Pigs Memphis Style for ribs
Would love to try Meathead's commercial rub
Sauces I love:
Gates'
Joe's
Pa & Ma's
Killer Hogs Vinegar Sauce
Disposable Equipment I use:
Disposable cutting boards
Tumbleweed chimney starters
Aluminum foil
Aluminum pans (half and full)
Latex gloves
Diamond Kosher Salt
Vice-President of BBQ Security, Roy
He's a pure-bred North American Brown Dog
He loves rawhide chewies
My wife calls me "Teddy" and I call her "Princess" and that's where "mrteddyprincess" comes from.
What about sitting it outside for a few days in the sun? A little UV might be what it needs...Last summer I took the foam out of a camper mattress and found mildew on it. One afternoon in the sun cleared it right up.
It’s mildew. It looks like smoky grease, but it’s mildew.
I hit it with Dawn Power Wash, I hit it with bleach and a toothbrush twice, and I’ve run it through the dishwasher twice on the pots & pans cycle. It is MUCH better than it was, and probably repeated attacks with bleach is the answer, but man. PITA. The bleach attacks were diminishing returns; the first one worked really well, but the second one didn’t.
Chuck it.
The mat is on sale at Thermoworks right now for $10.20
I LOVE Wet and Forget for stuff like this. You can clean it with one of the above products to get it clean now and a coating of W&F should last up to 10ish months.
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